While cobbling together a shootable gun with all printed parts is undoubtedly impressive, it’s also a little alarming. Given the increasing availability of 3D printers (you can now buy them at Staples), some lawmakers like Sen. Charles Schumer think it’s time to let regulation catch up to the technology, lest home-printed firearms or gun parts become another scourge to worry about.

After all, as Wilson tells Vice in a documentary about his weapons-making endeavors: “Look, gun control doesn’t mean what it meant in 1944.”

2. ‘Mini me’ figurines

Unlike the above-mentioned, there’s no ethical quandary here. Think of this as a photo booth for the modern age. Japanese company Omote 3D peddles a printed “mini me” replica service that could take a turn for the trendy if anyone decides to market these as wedding cake toppers. Just show up to a pop-up studio, stand dead-still for 15 minutes so they can scan you, then let the 3D printing magic fashion a tiny multi-dimensional statuette of yourself, your friends, family or whoever you could get to sit still for a quarter hour session. It’s a little costly considering the size: Up to $528 for a 20-centimeter-short figurine. But the cute and cool factor: Priceless.

3. Living cells, organs and cake

Instead of printing out layers of artificial material, scientists are now using live cells to manufacture parts the body can easily integrate in surgeries. They call it bioprinting. Doctors have used the technique to print skin grafts from stem cells, replacement bladders, new intestines, ears and other lifelike prosthetics, according to the International Business Times. Researchers have used it to print cell-based materials like leather and beef. And a lab announced it printed edible cake.

Correction: An earlier version of this blog post incorrectly stated that the 3D printed gun fires a .308 caliber round. It actually only fires a .38 caliber bullet. We regret the error.